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52212111 = 372486291
BaseRepresentation
bin1100011100101…
…1000110001111
310122020122112220
43013023012033
5101331241421
65103030423
71202536620
oct307130617
9118218486
1052212111
1127521806
121559b413
13aa81253
146d11a47
1548b53c6
hex31cb18f

52212111 has 8 divisors (see below), whose sum is σ = 79561344. Its totient is φ = 29835480.

The previous prime is 52212073. The next prime is 52212131. The reversal of 52212111 is 11121225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52212111 - 210 = 52211087 is a prime.

It is a super-2 number, since 2×522121112 = 5452209070152642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52212131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243125 + ... + 1243166.

It is an arithmetic number, because the mean of its divisors is an integer number (9945168).

Almost surely, 252212111 is an apocalyptic number.

52212111 is a deficient number, since it is larger than the sum of its proper divisors (27349233).

52212111 is a wasteful number, since it uses less digits than its factorization.

52212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486301.

The product of its digits is 40, while the sum is 15.

The square root of 52212111 is about 7225.7948351721. The cubic root of 52212111 is about 373.7579314730.

Adding to 52212111 its reverse (11121225), we get a palindrome (63333336).

The spelling of 52212111 in words is "fifty-two million, two hundred twelve thousand, one hundred eleven".

Divisors: 1 3 7 21 2486291 7458873 17404037 52212111